-- Migration: Update manual_feed_sack_entries to use date-based keys instead of cycle-based
-- Description: Remove cycle_id and day dependencies, use date + camera_name as unique key
-- Date: 2026-04-19

-- Drop old unique constraint
ALTER TABLE manual_feed_sack_entries DROP CONSTRAINT IF EXISTS manual_feed_sack_entries_cycle_id_day_camera_name_key;

-- Drop foreign key constraint
ALTER TABLE manual_feed_sack_entries DROP CONSTRAINT IF EXISTS manual_feed_sack_entries_cycle_id_fkey;

-- Drop cycle_id and day columns
ALTER TABLE manual_feed_sack_entries DROP COLUMN IF EXISTS cycle_id;
ALTER TABLE manual_feed_sack_entries DROP COLUMN IF EXISTS day;

-- Add new unique constraint on date + camera_name (only if it doesn't exist)
DO $$
BEGIN
    IF NOT EXISTS (
        SELECT 1 FROM pg_constraint
        WHERE conname = 'manual_feed_sack_entries_date_camera_key'
    ) THEN
        ALTER TABLE manual_feed_sack_entries
        ADD CONSTRAINT manual_feed_sack_entries_date_camera_key UNIQUE (date, camera_name);
    END IF;
END $$;

-- Drop old index on cycle_id
DROP INDEX IF EXISTS idx_manual_feed_sack_cycle;
DROP INDEX IF EXISTS idx_manual_feed_sack_day;

-- Add index on date for faster lookups
CREATE INDEX IF NOT EXISTS idx_manual_feed_sack_date ON manual_feed_sack_entries(date);